A CAN communication to wireless communication circuit

Abstract

The utility model discloses a kind of CAN communication conversion wireless communication circuit, it is related to communication field, the CAN communication conversion wireless communication circuit includes: CAN communication circuit, for building the CAN communication between single-chip microcontroller and CAN communication equipment;Wireless communication module circuit, for building the wireless communication between single-chip microcontroller and wireless communication equipment;Single-chip microcontroller, for realizing the communication between CAN communication equipment and wireless communication equipment by CAN communication circuit, wireless communication module circuit;CAN communication circuit connects single-chip microcontroller, the beneficial effect of the utility model is: the utility model realizes the conversion between CAN communication and wireless communication, so that user can set up electrical equipment by smart phone, and also can remote control, application scene is widely used;Greatly facilitate the control and use of user to electrical equipment, and product itself element is few, cost is low, development cycle is short, very suitable for on household appliance.

Description

Technical Field

[0001] This utility model relates to the field of communications, specifically a CAN communication to wireless communication circuit. Background Technology

[0002] Compared to the intelligence and widespread use of wireless communication in home appliances, most power products in RV inverters and chargers still use outdated wired communication, and the working environment is generally quite cramped. This makes it very inconvenient for users to obtain and observe the status of the equipment in many situations, reducing the user experience of such products and requiring improvement. Utility Model Content

[0003] The purpose of this invention is to provide a CAN communication to wireless communication circuit to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A CAN communication to wireless communication circuit, comprising:

[0006] CAN communication circuit, used to establish CAN communication between a microcontroller and a device with CAN communication capability;

[0007] Wireless communication module circuit, used to build wireless communication between a microcontroller and a wireless communication device (such as a mobile phone);

[0008] A microcontroller is used to enable communication between CAN communication devices and wireless communication devices through CAN communication circuits and wireless communication module circuits.

[0009] The CAN communication circuit connects to the microcontroller, and the microcontroller connects to the wireless communication module circuit.

[0010] The wireless communication module circuit includes chip U7, model number XY-MBA32A, which has a built-in antenna.

[0011] As a further improvement of this utility model: a 3.3V voltage is introduced into pin 2 of chip U7, and the introduced 3.3V voltage is grounded through capacitor C24.

[0012] As a further improvement of this utility model: pin 15 of chip U7 is connected to one end of resistor R21 and one end of resistor R22, the other end of resistor R21 is grounded, and the other end of resistor R22 outputs the voltage signal BT TEST.

[0013] As a further improvement of this utility model: pin 14 of chip U7 is connected to one end of resistor R23 and one end of resistor R25, the other end of resistor R25 is grounded, and the other end of resistor R23 is connected to the voltage signal CON-IND.

[0014] As a further improvement of this invention: pin 12 of chip U7 is connected to one end of resistor R24, and the other end of resistor R24 ​​is connected to the microcontroller.

[0015] Compared with the prior art, the advantages of this utility model are: this utility model realizes the conversion between CAN communication and wireless communication, allowing users to set electrical appliances through smartphones and also remotely control them, with a wide range of application scenarios; it greatly facilitates users' operation and use of electrical appliances, and the product itself has few components, low cost, and short development cycle, making it very suitable for household appliances. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a CAN communication to wireless communication circuit.

[0017] Figure 2 This is a circuit diagram of a wireless communication module. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 A CAN communication to wireless communication circuit, comprising:

[0020] CAN communication circuit, used to establish CAN communication between a microcontroller and a device with CAN communication capability;

[0021] Wireless communication module circuit, used to build wireless communication between a microcontroller and a wireless communication device (such as a mobile phone);

[0022] A microcontroller is used to enable communication between CAN communication devices and wireless communication devices through CAN communication circuits and wireless communication module circuits.

[0023] The CAN communication circuit connects to the microcontroller, and the microcontroller connects to the wireless communication module circuit.

[0024] The wireless communication module circuit includes chip U7, model number XY-MBA32A, which has a built-in antenna.

[0025] In this embodiment: Please refer to Figure 2 Pin 2 of chip U7 is supplied with 3.3V voltage, which is grounded through capacitor C24.

[0026] A 3.3V voltage powers chip U7. After power is applied, the internal antenna of chip U7 begins to send radio waves into the air to search for a pairing device.

[0027] In this embodiment: Please refer to Figure 2 Pin 15 of chip U7 is connected to one end of resistor R21 and one end of resistor R22. The other end of resistor R21 is grounded, and the other end of resistor R22 outputs the voltage signal BT TEST.

[0028] Pin 15 of chip U7 has a connection status indication function. When it is successfully paired and connected to another wireless device, it outputs a high level; when the device is disconnected, it outputs a low level. The voltage signal BT TEST can be used to determine whether it has been paired and connected to another wireless device by connecting an external LED or other related indicator devices.

[0029] In this embodiment: Please refer to Figure 2 Pin 14 of chip U7 is connected to one end of resistor R23 and one end of resistor R25. The other end of resistor R25 is grounded, and the other end of resistor R23 is connected to the voltage signal CON-IND.

[0030] Pin 14 of chip U7 is the wireless communication enable / disable pin. When wireless communication needs to be enabled, pin 14 needs to be set to low level; otherwise, it should be set to high level. When set to high level, chip U7 enters low-power operation mode.

[0031] In this embodiment: Please refer to Figure 2 Pin 12 of chip U7 is connected to one end of resistor R24, and the other end of resistor R24 ​​is connected to the microcontroller.

[0032] Taking CAN communication to wireless communication as an example, when the microcontroller communicates with an external device via the CAN communication circuit and receives data from the external device, it will synchronously convert it into serial communication data and send it to pin 12 of chip U7. After receiving this data, pin 12 (i.e., the RX pin) of chip U7 will convert it into specific radio waves and transmit it into the air. These specific radio waves can be received and read by devices that also have such wireless communication modules, such as smartphones. In this way, wireless communication between two different electrical devices can be easily achieved.

[0033] The working principle of this utility model is as follows: the CAN communication circuit is used to build CAN communication between the microcontroller and the CAN communication device; the wireless communication module circuit is used to build wireless communication between the microcontroller and the wireless communication device (such as a mobile phone); the microcontroller is used to realize communication between the CAN communication device and the wireless communication device through the CAN communication circuit and the wireless communication module circuit.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A CAN communication to wireless communication circuit, characterized in that, The CAN communication to wireless communication circuit includes: CAN communication circuit, used to establish CAN communication between a microcontroller and a device with CAN communication capability; Wireless communication module circuit, used to establish wireless communication between microcontroller and wireless communication device; A microcontroller is used to enable communication between CAN communication devices and wireless communication devices through CAN communication circuits and wireless communication module circuits. The CAN communication circuit connects to the microcontroller, and the microcontroller connects to the wireless communication module circuit. The wireless communication module circuit includes chip U7, model number XY-MBA32A, which has a built-in antenna.

2. The CAN communication to wireless communication circuit according to claim 1, characterized in that, Pin 2 of chip U7 is supplied with 3.3V voltage, which is grounded through capacitor C24.

3. The CAN communication to wireless communication circuit according to claim 1, characterized in that, Pin 15 of chip U7 is connected to one end of resistor R21 and one end of resistor R22. The other end of resistor R21 is grounded, and the other end of resistor R22 outputs the voltage signal BT TEST.

4. The CAN communication to wireless communication circuit according to claim 1 or 2, characterized in that, Pin 14 of chip U7 is connected to one end of resistor R23 and one end of resistor R25. The other end of resistor R25 is grounded, and the other end of resistor R23 is connected to the voltage signal CON-IND.

5. The CAN communication to wireless communication circuit according to claim 4, characterized in that, Pin 12 of chip U7 is connected to one end of resistor R24, and the other end of resistor R24 ​​is connected to the microcontroller.

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